Author: Israel Cantor
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Book Description
Twenty-two nighttime measurements were made of the atmospheric effects on light attenuation from a point source during the spring and fall of 1962 at a site on the Greenland icecap (Camp Century). Graphs are included to show the total and indirect intensity fluctuations over 12-second intervals under various atmospheric conditions. Some comparison is also made of the ratio of indirect/direct intensity vs optical depth under some Arctic and New Jersey shore atmospheric conditions. A much greater indirect/direct ratio in an Arctic environment of almost unity albedo, as compared to a local New Jersey environment of about 0.2 and 0.5 for the total albedo, is evident from some of the results noted. Three 'duct effects' were experienced when a maximum 3.5-fold and twofold increase of total intensity resulted; i.e., cases of 29 Oct and 13 Nov, respectively, compared to an atmosphere with a zero albedo and unlimited visibility, while the 15 Nov situation indicated a maximum 16-fold increase. However, each of the above-mentioned cases was complicated by the presence of some scattered fog patches. Results also indicate that intensities of light pulses from a point light source can vary by more than 100 percent at distances of 4.5 miles over 20-second time intervals. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 780
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 886
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Book Description
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1672
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 824
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Book Description
Author: Smithsonian Science Information Exchange
Publisher:
ISBN:
Category : Environmental health
Languages : en
Pages : 1478
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Book Description
Author:
Publisher:
ISBN:
Category : Fire prevention
Languages : en
Pages : 346
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Book Description
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1330
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Book Description
Author: Frank Träger
Publisher: Springer Science & Business Media
ISBN: 3642194095
Category : Science
Languages : en
Pages : 1704
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Book Description
This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
